IDENTIFICATION OF MECHANICAL-PROPERTIES OF COMPOSITES BASED ON DESIGNOF EXPERIMENTS

A numerical-experimental method for the identification of mechanical p roperties of laminated polymeric composites front the experimental res ults is being developed. For the first time, it is proposed to use the method of experiment planning to solve the identification (inverse) p roblems. The basic idea of the approach is that simple mathematical mo dels are determined only from information on the response of a structu re in reference points of the design. Therefore, a significant reducti on in the calculation of the identification functional (about 50-100 t imes) can. be achieved in comparison with the conventional methods of minimization. Examples of the numerical identification of the elastic properties of the laminated composites from the measured eigenfrequenc ies of plates are discussed.